package com.itheima.controller;

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.OSSObject;
import com.itheima.common.OssProperties;
import com.itheima.common.Result;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import java.io.*;

@RestController
@RequestMapping("common")
@Slf4j
public class CommonController {

    @Autowired
    private OssProperties ossProperties;

    @PostMapping("upload")
    public  Result upload(MultipartFile file) throws Exception {
        String filename = file.getOriginalFilename();

        // 填写Object完整路径，例如exampledir/exampleobject.txt。Object完整路径中不能包含Bucket名称。
        String objectName = filename;
        // 创建OSSClient实例。
        OSS ossClient = new OSSClientBuilder().build(ossProperties.getEndpoint(),ossProperties.getAccessKeyId(), ossProperties.getAccessKeySecret());
        try {
            ossClient.putObject(ossProperties.getBucketName(), objectName, new ByteArrayInputStream(file.getBytes()));
        } catch (Exception e) {
            log.error("上传失败");
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
        String ossurl=ossProperties.getUrl()+"/"+filename;
        return Result.success("上传成功", ossurl);
    }

    public static Result download() throws Exception {
        // Endpoint以华东1（杭州）为例，其它Region请按实际情况填写。
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // 阿里云账号AccessKey拥有所有API的访问权限，风险很高。强烈建议您创建并使用RAM用户进行API访问或日常运维，请登录RAM控制台创建RAM用户。
        String accessKeyId = "LTAI5tNKY6v3izLXRittAopf";
        String accessKeySecret = "KrIzeeaHOENjLtR6JigNWCT4lLSH6n";
        // 填写Bucket名称，例如examplebucket。
        String bucketName = "reggiebucket";
        // 填写Object完整路径，例如exampledir/exampleobject.txt。Object完整路径中不能包含Bucket名称。
        String objectName = "11.png";
        // 创建OSSClient实例。
        OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);

        try {
            // 调用ossClient.getObject返回一个OSSObject实例，该实例包含文件内容及文件元信息。
            OSSObject ossObject = ossClient.getObject(bucketName, objectName);
            // 调用ossObject.getObjectContent获取文件输入流，可读取此输入流获取其内容。
            InputStream content = ossObject.getObjectContent();
            if (content != null) {
                BufferedReader reader = new BufferedReader(new InputStreamReader(content));
                while (true) {
                    String line = reader.readLine();
                    if (line == null) {
                        break;
                    }
                    System.out.println("\n" + line);
                }
                // 数据读取完成后，获取的流必须关闭，否则会造成连接泄漏，导致请求无连接可用，程序无法正常工作。
                content.close();
            }
        } catch (OSSException oe) {
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + oe.getErrorMessage());
            System.out.println("Error Code:" + oe.getErrorCode());
            System.out.println("Request ID:" + oe.getRequestId());
            System.out.println("Host ID:" + oe.getHostId());
        } catch (ClientException ce) {
            System.out.println("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
        return Result.success();
    }
}